UPDATE (12:30 p.m.) - The highway was reportedly cleared around noon. Traffic remained backed up in the area.
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UPDATE (10:30 a.m.) - Crews were still working to clear the wreckage of the burned semi-truck.
The right slow lane and Broadway offramp remain closed.
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The California Highway Patrol closed the Broadway off ramp and the slow lane on Highway 101 in Santa Maria after a semi-trailer caught fire.
The fire was first reported on CHP's incident page at about 11:45 Thursday night.
CHP says this is a long-term road closure. They aren't sure when it will reopen.
This is a developing story. We'll keep you updated as more information becomes available.